DataSource: serverConstructor

[rle125]

My jsp call to DataSourceLoader is returning a blank page. This is only occuring on a new DataSource we've created. Our existing 100 or so DataSources load successfully.

I notice that when I remove the serverConstructor="com.isomorphic.jpa.JPADataSource" attribute it loads successfully.

Is there a limit that is being reached?

[Isomorphic]

No, there is no inherent limit that would cause a blank page to be returned. First thing to do with any server issue is to check the server-side log for errors - probably there is some obvious problem with JPA misconfiguration causing a crash as the DataSource initializes before being delivered to the client.

[rle125]

log4j.isc.config.xml was missing from our deployment. Adding it with DEBUG quickly pointed out our error. A missing @Embeddable attribute in our embedded key class.